AUVA COMPUTER, INC.
HFDC-II
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Data bus: |
16-bit ISA |
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Size: |
Three-quarter length, full-height card |
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Hard drive supported: |
Two MFM ST-506/412 drives |
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Floppy drives supported: |
Two 360KB, 720KB, 1.2MB, or 1.44MB drives |
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CONNECTIONS | |
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Function |
Location |
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4-pin connector - drive active LED |
J1 |
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20-pin data cable connector - drive 1 |
J2 |
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20-pin data cable connector - drive 0 |
J3 |
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34-pin control cable connector - hard drive |
J4 |
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34-pin control cable connector - floppy drive |
J5 |
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USER CONFIGURABLE SETTINGS | |||
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Function |
Location |
Setting | |
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LED always "on" when system on |
W1/1 |
open | |
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LED "on" only when drive is being accessed |
W1/1 |
closed | |
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Four byte ECC enabled |
W1/2 |
open | |
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Reserved - do not use |
W1/2 |
closed | |
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Cache enabled |
W1/3 |
open | |
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Cache disabled |
W1/3 |
closed | |
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Interleave ratio is 1:1 |
W1/4 |
open | |
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Maximum interleave ratio is 1:3 |
W1/4 |
closed | |
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Floppy drive primary address is 3F2-3F7h |
W2 |
open | |
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Floppy drive secondary address is 372-377h |
W2 |
closed | |
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Note: Close W1/4 when using disks formatted under the WD1003-WAH controller. | |||
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USER CONFIGURABLE SETTINGS CONTINUED | ||
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Function |
Location |
Setting |
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Hard drive primary address is 1F0-1F7h |
W3 |
open |
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Hard drive secondary address is 170-177h |
W3 |
closed |
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Floppy drive single speed enabled |
W4 |
open |
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Floppy drive dual speed enabled |
W4 |
closed |